#231F8F#231F8F

#231F8F is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.9% C 0.175 H 273.4°. Best body text is #FFFFFF at 12.62:1 contrast (WCAG AA passes).

Color values

HEX	#231F8F
RGB	rgb(35, 31, 143)
HSL	hsl(242, 64%, 34%)
HSV	hsv(242, 78%, 56%)
CMYK	cmyk(75.5%, 78.3%, 0%, 43.9%)
CIE-LAB	lab(21.28, 39.92, -60.27)
CIE-LCH	lch(21.28, 72.29, 303.52°)
OKLab	oklab(33.86% 0.0104 -0.1744)
OKLCH	oklch(33.86% 0.175 273.4)
XYZ	xyz(6.1394, 3.3198, 26.2985)
Luminance	0.0332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F8F #8B8F1F

analogous

#1F538F #231F8F #5B1F8F

triadic

#231F8F #8F231F #1F8F23

tetradic

#231F8F #8F1F53 #8B8F1F #1F8F5B

square

#231F8F #8F1F53 #8B8F1F #1F8F5B

split-complementary

#231F8F #8F5B1F #538F1F

monochromatic

#0A092A #17145D #231F8F #2F2AC1 #544FD9

Accessibility & contrast

On white

12.62

#231F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#231F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F8F

12.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F8F	#FFFFFF	#000000	##FFFFFF
##231F8F	1.00	12.62	1.66	12.62
#FFFFFF	12.62	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003892

Deuteranopia (green-blind)

#002E8D

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #231f8f;
/* rgb */ color: rgb(35, 31, 143);
/* oklch */ color: oklch(33.9% 0.175 273.4);

Tailwind

colors: {
  custom: {
    50: '#715db1',
    500: '#231f8f',
    950: '#000000',
  },
}

SCSS

$custom: #231f8f;
$custom-light: #715db1;
$custom-dark: #000000;

JSON

{
  "hex": "#231f8f",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 143
  },
  "hsl": {
    "h": 242.143,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.33863,
    "c": 0.1747,
    "h": 273.4
  },
  "luminance": 0.0332
}

Semantic roles & 50–950 ramp

primary

#231F8F

secondary

#B8BC4E

accent

#E740E1

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231F8F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →